PIN CONNECTIONS
Table 1. MPC18730 Pin Definitions (continued)
A functional description of each pin can be found in the Functional Pin Description section beginning on page 14.
Pin
Function
Pin Number
Pin Name
Formal Name
Definition
VB Power Supply Connection for Ni_mh
VB Power Supply Connection for Li_ion
V_STDBY Voltage Output
7
8
LVB
HVB
Input
Input
Low Voltage Battery
High Voltage Battery
Standby Voltage
9
V_STDBY
VO1_SENSE
Output
Input
Switching Power Supply Circuit 1, VO1_SENSE Voltage Input,
VO1_SENSE Power Supply
10
Voltage Input 1
Power Switch 1 Output
11
12
13
14
15
16
17
VOUT1
VIN1
Output
Output
Power
Power
Ground
Ground
Output
Voltage Output 1
Voltage Output 1
Switching 1
Switching Power Supply Circuit 1 Output
Switching Power Supply Circuit 1 Coil Connection
Switching Power Supply Circuit 1 Coil Connection
Switching Power Supply Circuit 1 Power GND
Switching Power Supply Circuit 1 Power GND
Reset Circuit 1 Reset Signal Output
SW1
SW1
Switching 1
PGND1
PGND1
PGOOD1
Power Ground 1
Power Ground 1
Inverted Reset
Output 1
Reset Circuit 1 Reset Signal Delaying Capacitor Connection
18
PGOOD1_DELAY
Input
Reset Delay
Capacitor 1
Switching Power Supply Circuit 1 Reset Voltage Reference Output
Switching Power Supply Circuit 1 Maximum Duty Setting
Switching Power Supply Circuit 1 Error Amp Output
19
20
21
RESET1_TH
DMAX1
Output
Power
Output
Reset1 Adjustment
Duty Control
EAOUT1
Reference Feedback
1
Switching Power Supply Circuit 1 Error Amp Inverse Input
22
23
EAIN1
Input
Input Minus 1
VGATE Power Supply Circuit Charge Pump Capacitor Connection
CH_PUMP
Power
Charge Pump
Capacitor
VGATE Power Supply Circuit Voltage Output, Pre-Diver Circuit Power
Supply
24
VGATE
Output
Gate Voltage
VGATE Power Supply Circuit Coil Connection
VGATE Power Supply Circuit Power GND
25
26
27
28
29
30
31
SWGATE
GNDGATE
VBATT
Power
Ground
Power
Output
Output
Input
Switching
Power Ground 3
Battery Voltage
VGATE Select 2
VGATE Select 1
Input Minus
VB Power Supply Connection
VG Power Supply Circuit Output Voltage Setting 2
VGATE Power Supply Circuit Output Voltage Setting 1
Switching Power Supply Circuit 2 Error Amp Inverting Input
Switching Power Supply Circuit 2 Error Amp Output
VGATESEL2
VGATESEL1
EAIN2
EAOUT2
Output
Reference Feedback
2
Switching Power Supply Circuit 2 Maximum Duty Setting
Reset Circuit 2 Reset Signal Delay Capacitor Connection
32
33
DMAX2
Power
Input
Duty Control
PGOOD2_DELAY
Reset Delay
Capacitor 1
Reset Circuit 2 Reset Signal Output
34
PGOOD2
Output
Inverted Reset
Output 2
Switching Power Supply Circuit 2 Power GND
Switching Power Supply Circuit 2 Power GND
35
36
PGND2
PGND2
Ground
Ground
Power Ground 2
Power Ground 2
18730
Analog Integrated Circuit Device Data
Freescale Semiconductor
4
FREESCALE [ Freescale ]
